Everything is getting an update in the new edition of Pathfinder. That includes all the base classes. In this preview, we get a look at the Sorcerer. These magic-users get their powers from ancient pacts and bloodlines. They're born with magic in their veins, effectively. But how will that affect their abilities? Read on to find out.

From the post:

Their magical blood gives sorcerers their spellcasting power, and it's been a major part of the class since Pathfinder's inception. So for the Pathfinder Playtest, we're going all in: your character's bloodline determines her spell list!